1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaec42e102eee1e2f85a9c435dec82c81fa0225f4b8cb6310c0e5687e1e1dbe. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0afbfe66-a69a-477b-ab73-0e196222023b.json and https://artists.proofprofile.net/proofs/artist/0afbfe66-a69a-477b-ab73-0e196222023b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46caa0503048f6f864932faa8d70353c5cb5229555fa3607634e682a63019e8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d041470236628e95058cabe1283005dd355444836040283d8b67be05b7808f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b30b445e7731cfa4e66519d712ddb1d52e25dcfd9f402e1b1d84799ea3ecffe. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9a62c1cac9573c3585cb7bd7db7b4eea661c2b7087d447320045855e02761. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fbcd33fc7f53b86cea989cc020254e712aae7860041d9964d33f8b47572b75. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad0648661c7ecdc256479eee560fc128f9dd06868be300b577eb49301b094d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7020582c8d3117643af0dc2d7105023b9a94b11ea4f67bd253c68a8a4b6219a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922206797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6122e41d121ca760589ef6e889f624d03ccb01f9f530828c17fe4b91bc85af9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ922102470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63e56dbc6b933126611a4b1f02e55136b19a6e4d7a18171bd95809c54a8a04e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602100845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f035dfac796107456aa14efa40c40313dac745267d1696aa5a2b6b79c7e6b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602100944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5919ae1f0c9c7bc198c84f8b7b912462632dfc9960809f8ad015634b2e8f8a02. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602100949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b4ab54b85a249d140f4613d99f40cc127ea851393afadcbf297ae0c88b1ede. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602001664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae5ee5e7dd4530f5183a3624150d110198e920eb19370b9df306d58c56259f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602002043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63761afb6b955c6ad7bfaa60941e6ea4795e7e71ae4966647b04eaf1f2e49ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPH1899904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b05e70bf4af1f59e8a57f3cd7a406b4f4d45a94f51f60b8eb8ac7d2d794620. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601902946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1931e1f8b95c827ae9ec0e0e01f557fdc6a20c27135a6c2fe3a3199718e6fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601902947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766e3dd399a0f771baebcd5a721cc3773baf40670bf6f3abe0bbf32a663625ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPH1899890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42d899d011ed10bb9f8993bb88862e82b8e6af46a564c2738ed7b34cd8e5138. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPI1968492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd2560e3bc7ae7722a45eb8cebd4abf49f007ae3e9608f84edcfb6a520a333. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601902950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f13d0616e52aea0fe7e3e1999712f5a5dbd0ab9fe15adf44e753aa9083ce610. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601902951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c3f4e65780db5984d54b48fc287a6a825338d93061b110cd3fe273969d59ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278ed5ef89528537eaaa70633b47f598957c4dc06879b2309d5dccc14afbbc53. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPC102300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f62c95310ee9ae4b894fc24c26bde23848f7dceda28d9c014f0e2426c7b9f31. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602102132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f035dfac796107456aa14efa40c40313dac745267d1696aa5a2b6b79c7e6b0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602100944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63e56dbc6b933126611a4b1f02e55136b19a6e4d7a18171bd95809c54a8a04e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB602100845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd2560e3bc7ae7722a45eb8cebd4abf49f007ae3e9608f84edcfb6a520a333. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPB601902950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f0444f639c3ea097c81faa380f06312902ef2a476c9c99e4538ed17737c8a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPF1790798.